The thing is, if you battle in tiers, which a good amount of people do, you'll probably never see Haxorus and eelektross in the same tier. Rampardos is good for a lower tier counter. Plenty of pokemon are capable of the job of taking him down, not just Haxorus, and not just mold breakers for that matter.

insomnia works but... it wont fall asleep is suggest entertainment or mold breaker or mummy or hold and iron ball and fling it wont the iron ball thing work? terobolt and turboblaze work good too right? still won problem only reshiram and zekrom know it... also a pokemon with whirlwind could switch it out and deal with it later...